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<blockquote data-quote="tourettes" data-source="post: 778599" data-attributes="member: 10858">I think 9500 is a bit beefier GPU than the integrated 9400. Althou I cannot remember that 9400 owners would have been complaining about stuttering / juddering. But maybe there aren't that many 9400 owners in MediaPortal users or maybe the ones who own it wont notice the juddering / stuttering etc. Currently there is no pixel shaders usage at all in MP's renderer - I would love to add some scaling and some chroma upsampling for example but you know, there is just not enough free time around. And it doesn't help at all when there are other DS components as well (I haven't worked with the video renderer for about a year at least, probably even much more).About that &gt; 20 ms pixel shader time. How much over 20 ms it is? I don't know the GPU's internals (at all) - maybe the drivers or GPU are only able to process a batch that fits into the one v-sync period for some strange reason? Maybe some texture locking or other comes into way to block the rendering pipeline. Have you tried to make sure that the pixel shader processing is started as close to the v-sync target as possible? Just to see if it changes the behavior at all.</blockquote>

[QUOTE="tourettes, post: 778599, member: 10858"] I think 9500 is a bit beefier GPU than the integrated 9400. Althou I cannot remember that 9400 owners would have been complaining about stuttering / juddering. But maybe there aren't that many 9400 owners in MediaPortal users or maybe the ones who own it wont notice the juddering / stuttering etc. Currently there is no pixel shaders usage at all in MP's renderer - I would love to add some scaling and some chroma upsampling for example but you know, there is just not enough free time around. And it doesn't help at all when there are other DS components as well (I haven't worked with the video renderer for about a year at least, probably even much more). About that > 20 ms pixel shader time. How much over 20 ms it is? I don't know the GPU's internals (at all) - maybe the drivers or GPU are only able to process a batch that fits into the one v-sync period for some strange reason? Maybe some texture locking or other comes into way to block the rendering pipeline. Have you tried to make sure that the pixel shader processing is started as close to the v-sync target as possible? Just to see if it changes the behavior at all. [/QUOTE]

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